ФИЗИЧЕСКИЕ ЗАКОНОМЕРНОСТИ ПОЛУЧЕНИЯ WN/ZrN КОМПОЗИТНЫХ ПОКРЫТИЙ МЕТОДОМ ВАКУУМНОГО ДУГОВОГО ОСАЖДЕНИЯ

Из-за возросших требований к инструментам, используемым в экстремальных условиях эксплуатации продления срока службы инструментов, широко используются защитные покрытия. В данной работе исследуются физические закономерности получения покрытий MeN (Me = Zr, Cr, Mo, Nb) многослойных нанокомпозитов на основе WN, а также влияние на микроструктуру, фазовый состав, а также механические и трибологические свойства. Многослойные покрытия WN/MoN являются новой сферой применения, и для производства этих покрытий впервые используется катодно-дуговое физическое осаждение из паровой фазы (CA-PVD). Кроме того, проводятся расчеты из первых принципов для лучшего понимания свойств осажденных мультислоев. Наблюдаются две микроструктуры покрытия с различными типами решетки: (i) гранецентрированная кубическая и (ii) комбинация гексагональной и ГЦК. Среди исследованных систем WN/NbN демонстрирует превосходные свойства, включая самую низкую удельную скорость изнашивания (1,7 × 10^-6 мм³/Нм), высокую твердость и заметный индекс пластичности. Отличные трибологические характеристики можно объяснить такими факторами, как низкая шероховатость поверхности, высокая упругая деформация до разрушения, образование трибопленок Nb₂O₅ и WO₃ во время скольжения, пластичное поведение NbN и структура нанокомпозита.

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